Diameter 57 cm, height 48 cm.
Wear.
Christian Björk, 'Näfveqvarns Bruk - konstnärer och arkitekter till industrin', Orosdi-Back 2013, see the model illustrated pp 62-63, 106, 165.
The model was exhibited at the World Fairs in Paris 1925, New York 1927 and at the Stockholm Fair in 1930.